Can soluble urokinase plasminogen receptor predict outcomes after cardiac surgery?

Acknowledgements: We thank Lisa Jolly, from the Institute of Infection, Immunity and Inflammation at the University of Glasgow who performed all lab analysis. We thank Professor John Kinsella for his contributions to this research. Funding: This work was supported by the National Institute of Academic Anaesthesia through the Royal College of Anaesthetists Research, Education and Travel grant via the Ernest Leach Fund to Dr Philip McCall. The funding body had no role in design of the study, collection, analysis and interpretation of data or writing of the manuscript.Peer reviewedPostprintPostprintPostprin

An optimisation-based iterative approach for speckle tracking echocardiography

Speckle tracking is the most prominent technique used to estimate the regional movement of the heart based on echocardiograms. In this study, we propose an optimised-based block matching algorithm to perform speckle tracking iteratively. The proposed technique was evaluated using a publicly available synthetic echocardiographic dataset with known ground-truth from several major vendors and for healthy/ischaemic cases. The results were compared with the results from the classic (standard) two-dimensional block matching. The proposed method presented an average displacement error of 0.57 pixels, while classic block matching provided an average error of 1.15 pixels. When estimating the segmental/regional longitudinal strain in healthy cases, the proposed method, with an average of 0.32 ± 0.53, outperformed the classic counterpart, with an average of 3.43 ± 2.84. A similar superior performance was observed in ischaemic cases. This method does not require any additional ad hoc filtering process. Therefore, it can potentially help to reduce the variability in the strain measurements caused by various post-processing techniques applied by different implementations of the speckle tracking

Quantification of Internal Stress-Strain Fields in Human Tendon: Unraveling the Mechanisms that Underlie Regional Tendon Adaptations and Mal-Adaptations to Mechanical Loading and the Effectiveness of Therapeutic Eccentric Exercise.

By virtue of their anatomical location between muscles and bones, tendons make it possible to transform contractile force to joint rotation and locomotion. However, tendons do not behave as rigid links, but exhibit viscoelastic tensile properties, thereby affecting the length and contractile force in the in-series muscle, but also storing and releasing elastic stain energy as some tendons are stretched and recoiled in a cyclic manner during locomotion. In the late 90s, advancements were made in the application of ultrasound scanning that allowed quantifying the tensile deformability and mechanical properties of human tendons in vivo. Since then, the main principles of the ultrasound-based method have been applied by numerous research groups throughout the world and showed that tendons increase their tensile stiffness in response to exercise training and chronic mechanical loading, in general, by increasing their size and improving their intrinsic material. It is often assumed that these changes occur homogenously, in the entire body of the tendon, but recent findings indicate that the adaptations may in fact take place in some but not all tendon regions. The present review focuses on these regional adaptability features and highlights two paradigms where they are particularly evident: (a) Chronic mechanical loading in healthy tendons, and (b) tendinopathy. In the former loading paradigm, local tendon adaptations indicate that certain regions may "see," and therefore adapt to, increased levels of stress. In the latter paradigm, local pathological features indicate that certain tendon regions may be "stress-shielded" and degenerate over time. Eccentric exercise protocols have successfully been used in the management of tendinopathy, without much sound understanding of the mechanisms underpinning their effectiveness. For insertional tendinopathy, in particular, it is possible that the effectiveness of a loading/rehabilitation protocol depends on the topography of the stress created by the exercise and is not only reliant upon the type of muscle contraction performed. To better understand the micromechanical behavior and regional adaptability/mal-adaptability of tendon tissue it is important to estimate its internal stress-strain fields. Recent relevant advancements in numerical techniques related to tendon loading are discussed

Policing and human rights: eliminating discrimination, xenophobia, intolerance and the abuse of power from police work

This paper examines racism, xenophobia, discrimination, intolerance and the abuse of power in policing. It presents a critical analysis of theoretical and empirical research studies of police organisations in Britain, South Africa, Australia and the USA. It sets out a framework for protecting fundamental human rights – to safety, liberty and freedom from unlawful intrusion by the state – based on international legal instruments relating to anti-discrimination and the governance of policing. The paper reviews the research on the control of abusive policing through structural and cultural change; innovations in personnel management and training; and the introduction of robust mechanisms to achieve democratic accountability

Policing and human rights

This text is derived from presentations made by the United Nations Research Institute for Social Development (UNRISD) at an international conference on racism, racial discrimination and related intolerance held in Durban in 2001. Ten contributions written by 17 international academics and researchers are organized into two sections addressing racism and citizenship, and racism and social justice. A sampling of topics: the historical construction of race and citizenship in the U.S.; migrant workers and xenophobia in the Middle East; policing and human rights; Malaysia's new economic policy and "national unity"; the politics of land distribution and race relations in Southern Africa; and race, gender and social policy in Aotearoa/New Zealand

Attitudinal & Knowledge Barriers towards Effective Pain Assessment & Management in Dementia: A Narrative Synthesis

Under-assessment and inadequate treatment of pain is a common problem for older adults, particularly those with dementia. This may be in part attributed to knowledge deficits and negative attitudes among healthcare staff and informal caregivers towards pain, its assessment and its management in dementia. Knowledge and attitudes have a significant predictive relationship with behavior, potentially impacting pain assessment and management practices. Despite this there remains a paucity of research in the area and a lack of clarity about existing knowledge levels and attitudes among dementia caregivers. Therefore, the aims of this review were to: identify what knowledge deficits and attitudinal barriers exist amongst dementia caregivers; and identify the scales available to measure these. A search was carried out in the following electronic databases: Academic Search Premier; CINAHL; Education Research Complete; Humanities International Journals; Psychology and Behavioral Sciences Collection; PsychINFO; PsychArticles; Teacher Reference Center; and MEDLINE. A total of 13 articles met the inclusion criteria. A number of knowledge deficits and negative attitudes were identified, particularly in the use self-reports and pain assessment tools in dementia, and the safety of opioids. Understanding and positive attitudes were demonstrated in some areas, such as non-narcotic pain medications and identifying behavioral pain indicators. Of the 4 scales identified, positive results were found for internal consistency and content validity, however further refinement and testing is necessary. It was concluded attitudinal and knowledge barriers exist which should be addressed given their influence over practice behavior, however, there is a willingness and knowledge base from which progress can build